Microstructure and Properties of Stir Cast AZ91 Mg Alloy – SiCp Composites

2012 ◽  
Vol 710 ◽  
pp. 365-370 ◽  
Author(s):  
Sujayakumar Prasanth ◽  
Kumaraswamy Kaliamma Ajith Kumar ◽  
Thazhavilai Ponnu Deva Rajan ◽  
Uma Thanu Subramonia Pillai ◽  
Bellambettu Chandrasekhara Pai
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Microstructural Characterization ◽  
Casting Process ◽  
Stir Casting ◽  
Tensile Fracture ◽  
Matrix Composites ◽  
Az91 Magnesium Alloy ◽  
The Matrix ◽  
Az91 Magnesium

Magnesium metal matrix composites (MMCs) have been receiving attention in recent years as an attractive choice for aerospace and automotive applications because of their low density and superior specific properties. Using stir casting process, AZ91 magnesium alloy metal matrix composites have been produced with different weight percentages (5, 10, 15, 20 and 25) of silicon carbide particles (SiCp) addition. Microstructural characterization reveals uniform distribution of SiC particles with good interfacial bonding between the matrix and reinforcement. Electrical conductivity and Co-efficient of Thermal Expansion (CTE) measurements carried out on these composites have yielded better properties. Improved mechanical properties such as hardness, ultimate tensile strength, and compressive strength are obtained. The microfracture mechanisms involved during tensile fracture is analyzed and correlated with the properties obtained.

Analysis of Mechanical Behavior of Al6061 Composites Reinforced with Titanium Dioxide

2022 ◽  
Vol 3 (3) ◽  
Keyword(s):  
Tensile Strength ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Casting Process ◽  
Stir Casting ◽  
Matrix Composites ◽  
The Matrix ◽  
Strong Material ◽  
Oxide Particles ◽  
Alloy Metal

Aluminum alloys are used low density good mechanical properties, better wear resistance as compared to predictable metals and their alloys. The industries are continuing in demand to develop light weight material, inexpensive and strong material which has led to the growth of aluminum alloy metal matrix composites. The aluminum based metal matrix composites have been moulded using TiO2 as reinforcement materials using the stir casting process. The hardness and tensile strength have been calculated addition to the TiO2 in Aluminium matrix improves the hardness of the material. The tensile strength and hardness increases above 4% of titanium oxide particles in the matrix.

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